Editor's pick
SCL-90-R: a multi-dimensional symptom checklist and when it beats narrow scales
SCL-90-R (Derogatis 1977/1994) — 90 items, 9 subscales, 3 global indices. A multi-dimensional psychopathology screen in 15 minutes. When to pick SCL-90-R over narrow PHQ-9 / GAD-7 / BDI-II. The "9 subscale" factor structure does not replicate cleanly in modern studies — bi-factor model and GSI as the primary outcome (Urbán 2016, N=5,748). The Russian Tarabrina adaptation and the data gap.